Masha is a Russian girl who lives in the forest with her pig, goat and dog. All the animals in the forest are afraid of her as she forces them to play with her. One morning, Masha sees a butterfly and inadvertently follows it inside the home of a bear who has gone fishing. While playing there, she makes a big mess. When the Bear returns, he sees the disaster caused by Masha. The Bear tries to get rid of Masha, but he is unsuccessful, and he and Masha become friends.